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Recycling method of electrode active material of metal oxide, electrode active material of metal oxide for lithium secondary battery, electrode for lithium secondary battery, and lithium secondary battery fabricated thereby
Recycling method of electrode active material of metal oxide, electrode active material of metal oxide for lithium secondary battery, electrode for lithium secondary battery, and lithium secondary battery fabricated thereby
The present invention relates to a recycling method of an electrode active material of a metal oxide for a lithium secondary battery. The method comprises: a first step for preparing electrode scrap containing an electrode active material of a metal oxide being generated in the process of manufacturing a lithium secondary battery; a second step for carbonizing a binder existing in the electrode scrap by thermally treating the electrode scrap in an atmosphere containing air or the mixed gas of air and nitrogen; and a third step for recovering the electrode active material of a metal oxide from the electrode scrap. According to the present invention, a user can minimize environmental pollution by using simple physical thermal treatment and a separation method and can recycle an electrode active material of a metal oxide contained in electrode scrap or a battery being generated in the process of manufacturing an electrode and a battery through a simple process with low costs. [Reference numerals] (S1) Preparing electrode scrap containing electrode active material of metal oxide;(S2) Heat-processing (300-700C air atmosphere or air and nitrogen mixed gas atmosphere);(S3) Recovering electrode active material of metal oxide (grinding, sieving);(S4) Producing electrode for lithium secondary battery
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